A fibre reinforced cement column and method of forming the same

Details A fibre reinforced cement column and method of forming the same A fibre reinforced cement column and method of forming the same

B - Operations, Transporting

28

B

B28B 21/92 (2006.01) B28B 21/96 (2006.01) E04C 3/34 (2006.01)

Patent

CA 2541573

A fibre reinforced cement (FRC) tubular body having a wall thickness to outer diameter ratio of less than around 0.050, preferably 0.035. A lathe assembly and method for forming an elongate tubular body, such as said FRC tubular body, is also claimed, said lathe assembly including: an elongate base (1); a pair of chucks (4) located at opposite longitudinal ends of said base (1), said chucks (4) being configured to engage opposite longitudinal ends of the tubular body; two or more lateral supports (11, 12, 17) connected to said base to support the tubular body at two or more support locations between its ends; drive means (8) for rotating the body about a longitudinal axis; and a profiling tool (9) connected to the base and engageable to machine or profile an outer circumferential surface of the tubular body.

L'invention concerne un corps tubulaire en ciment renforcé par des fibres possédant une épaisseur de paroi par rapport au rapport des diamètres externes, inférieure à environ 0,050, de préférence, 0,035. Cette invention a aussi trait à un ensemble de lattes et à un procédé de conception d'un corps tubulaire allongé, tel ledit corps tubulaire en ciment renforcé par des fibres. Ledit ensemble de lattes comprend une base allongée (1), une paire de mandrins (4) situés au niveau des extrémités longitudinales opposées de ladite base (1), ces mandrins (4) étant conçus pour rentrer en contact avec des extrémités longitudinales opposées du corps tubulaire, au moins deux supports latéraux (11, 12, 17) reliés à ladite base de manière à soutenir le corps tubulaire au niveau d'au moins deux emplacements de support entre ses extrémités, un dispositif d'entraînement (8) servant à faire tourner le corps autour d'un axe longitudinal, et un outil de profilage (9) qui est rattaché à la base et rentre en contact avec la machine ou le profil au niveau d'une surface circonférentielle externe du corps tubulaire.

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